GROUP 08

MILITARY INSTITUTE OF SCIENCE AND TECHNOLOGY

AIRCRAFT MAINTENANCE SHOP

WELCOME TO OUR PRESENTATION

HRIDOY BISWASID-201322049

TONMOY SARKERID-201322051

KUMAR SAIKAT HALDERID-201322052

RICHIE RANAISSANSEID-201322054

MD. SADMAN SAKIB ID-201322053

GROUP MEMBERS

Biman Bangladesh Airlines is the national flag carrier airline of Bangladesh. Its main hub is at Shahjalal International Airport in Dhaka and it also operates flights from its secondary hubs Shah Amanat International Airport in Chittagong and Osmani International Airport in Sylhet. The airline provides international passenger and cargo services to Asia and Europe, as well as major domestic routes inside Bangladesh

INTRODUCTION

MAINTAINANCE SUPPORT SHOP

• Maintenance Support Shop is one of the major shops with different facilities required for the maintenance of an aircraft

• This shop is divided into 6 sections

MAINTAINANCE SUPPORT SHOP

Maintenance Support Shop

Sheet Metal Shop

Tools Shop

Industrial Section

Hanger Maintenance

Wheel Shop

Paint Shop

SHEET METAL SHOP

SHEET METAL SHOP In sheet metal shop every work of aircraft related

to the metal sheets are done. Any components that are used in this shop is certified by regularity authority (CAAB in Bangladesh). Every instrument used here is made of two standards.

They are- 1. National Aviation Standard (NAS) 2. Military Standard(MS)

Mr. S Ali Sheikh is in charge of this shop

The types of metals usedMetal

Aluminium

Aluminum Alloy 2024T3

Aluminum Alloy 2024T6

Aluminum Alloy 3003-H14Magnesium

Steel

Stainless steel

Composite

Carbon fiber Rainfirce Plastic

Glass fiber Rainfirce Plastic

Enamite fiber Rainfirce Plastic

Quality of the MaterialsEvery metal that are used here has some quality. The qualities are described below - 

Light weight Metals are rigid that gives good strength Corrosion of metals are less than other

metals Better heat tolerance Better sustainability

Negligible Damage : Aircraft can fly with this type of damage. This means, the item is , but no need to repair, since the aircraft item being such damaged can work accordingly Repairable Damage:

When the item of the aircraft is damaged and has to be repaired. Without repair, that item unable to work Replacement Damage : If the aircraft item is affected by such damage, that cannot be repaired, then it has to be replaced by the new item by buying that from the company. Such damage is called replacement damage

Types of Damage

Repair Category

  

Caterogy A

• Permanent repair: After repairment it will work like new one. This is an emergency repair. Aircraft need an immediate action in this category. This type of repair need more days to be repaired.

Caterogy B

• Semi permanent repair : After repairement this will go under inspection.

Repairement will be checked after a definite time interval.

Caterogy C

• One-time flight repair : This type of repair restores a limited load-carrying ability to the damaged structure in order to fly the aircraft to a depot maintenance activity for a permanent repair.

TOOLS STORE

• Tools need to repair and maintain the aircraft is stored and supported by this store.

• Every tool are organized in a row according to their size.

• Every size of the tool is written aside of the tools. Sizes are defined in inches mainly

Tools store

Spanner/ Wrench

Moon SpannerJaw and Ring Spanner

Ring SpannerDouble sided jaw ring spanner

• A wrench (also called a spanner) is a tool used to provide grip and mechanical advantage in applying torque to turn objects—

• usually rotary fasteners, such as nuts and bolts—or keep them from turning.

Torque meter • There are times when definite

pressure must be applied to a nut or bolt as it is installed. In such cases a torque wrench must be used

• The torque wrench is a precision tool consisting of a torque indicating handle and appropriate adapter or attachments

• It measures the amount of turning or twisting force applied to a nut, bolt, or screw

HAMMERS AND MALLETS • Metal head hammers are usually sized

according to the weight of the head without the handle

• Occasionally it is necessary to use a soft-faced hammer, which has a striking surface made of wood, brass, lead, rawhide, hard rubber, or plastic. A mallet is a hammer-like tool with a head made of hickory, rawhide, or rubber

HAMMER

• The pliers used most frequently in aircraft repair work are the diagonal, needle nose, and duckbill. The size of pliers indicates their overall length, usually ranging from 5 to 12 inches

• Round nose pliers are used to crimp metal. They are not made for heavy work because too much pressure will spring the jaws, which are often wrapped to prevent scarring the metal

• Needle nose pliers have half round jaws of varying lengths. They are used to hold objects and make adjustments in tight places

• Duckbill pliers resemble a “duck’s bill” in that the jaws are thin, flat, and shaped like a duck’s bill

Pliers and Pliers-Type Cutting Tools

Pliers and Plier -Type Cutting Tools

Punches• Punches are used to locate centers for drawing

circles, to start holes for drilling, to punch holes in sheet metal, to transfer location of holes in patterns, and to remove damaged rivets, pins or bolts

• Solid or hollow punches are the two types generally used

Files• Most files are made of high-grade tool steels that

are hardened and tempered• manufactured in a variety of shapes and sizes• They are known either by the cross section, the

general shape, or by their particular useMost Commonly Used Files :• Hand Files• Mill Files• Square Files• Round or Rat Tail Files• Triangular and Three Square Files

FILE

Extension Bar Used with the socket to tighten the bolts

Speed handleUsed where there is curved section while reaching to the nuts and bolts

T handles Used when it needs to apply force from both sides of the handle. Easy to tighten of loosen by this type of handle

Hinge HandleUsed for flexibility of the handle

Magnetic BarUsed to clip any tool from unreachable place

INDUSTRIAL SECTION

Grinding MachineA grinding machine, often shortened to grinder, is any of various power tools or machine tools used for grinding, which is a type of machining using an abrasive wheel as the cutting tool

Aircraft Support Trestle

Aircraft Support Trestle is a kind of tool, which is used to lift up or carry something or any person, to work on the manufacture of an aircraft.

Sizzor Lift• A sizzor lift is a type of

platform that can usually only move vertically.

• The mechanism to achieve this is the use of linked, folding supports in a criss-cross "X" pattern, known as a  pantograph  (or scissor mechanism )

• The upward motion is achieved by the application of pressure to the outside of the lowest set of supports, elongating the crossing pattern, and propelling the work platform vertically

Axle Jack• Aircraft excel jacks allow maintenance

technicians or aircraft operators to lift the aircraft off the ground to perform maintenance checks, servicing, or inspections

• Excel Jacks have max lifting capacities measured in tons to meet different weights of aircraft

HANGER MAINTAINANACE

Hanger MaintenanceGround Servicing Equipment (GSE)

• Ground Servicing Equipment is the support equipment found at an airport, usually on the ramp, the servicing area by the terminal

• This equipment is used to service the aircraft between flights

• As the name suggests, ground support equipment is there to support the operations of aircraft whilst on the ground

DOLLIES

• used for the transportation of loose baggage's, over-sized baggage's, mail bags, loose cargo carton boxes, etc. between the aircraft and the terminal or sorting facility.

• fitted with a brake system which blocks the wheels from moving when the connecting rod is not attached to a tug

CHOCKS • Chocks are used to prevent an aircraft from moving

while parked at the gate or in a hangar. • placed in the front ('fore') and back ('aft') of the

wheels of landing gear• They are made out of hard wood or hard rubber. • chocks must be used in a pair on the same wheel and

they must be placed in physical contact with the wheel

WHEEL SHOP

Wheel Shop • Aircraft wheels are important for toeing,

take off, landing and taxing This shop takes care about all the problems related to wheels.

• At each inspection the tools goes through some NDT (Nondestructive test) that ensures its health to carry other flights.

• Each aircraft has wheels of different radius

Wheel Shop• The wheel shop ensures -

Strength of tires No leakage on tires Perfect shape of tires Repair of tire Replacement of tire Removal of tire Inspection of tire

Some Aircraft wheel companies - 1.Honey wheel2.Good reach3.Messier –Bugatti-Dowty

Wheel Shop

Wheel shop working process

Wheel Checki

ng

Repair/Remove/Replacem

ent

NDT inspectio

nAll Major Checking

Release Certificat

e

Not Ready for

Ready for

PAINT SHOP

Paint Shop• Aircraft paint shop is responsible of all type of

painting of the aircraft• These includes two type of painting –

Exterior Painting : Paints the exterior parts of the

aircraft Interior painting:

Paints the interior components of the aircraft

Paint ShopProperties of Aircraft paints : Slow evaporation rate allowing long working

times Water rinsable Non-flammable pH below 2 Safe on aluminium, aluminium alloys, copper,

mild steel and stainless steel

Exterior Painting ProcessUse sanding gun to

remove extra layers from fuselage

If corrosion or breakage on skin paint takes place use muskin tape to point

that place

Use paint remover on that

spot

Use scrapper to remove that corrosion or that paint from the

spot

Use a clear layer of paint on that

spot

Give time to dry that paint

give an extra layer of Anti corrosion chemical

over the paint

Take time to dry

Remove the muskin tape or the plastic

from the sides

Interior Painting ProcessRemove the corrosion

Spray Painting Process• Spray painting is a painting technique where a

device sprays a coating (paint, ink, varnish, etc.) through the air onto a surface

• The most common types employ compressed gas—usually air to atomize and direct the paint particles

• Air gun spraying uses equipment that is generally larger. It is typically used for covering large surfaces with an even coating of liquid

 Paint Gun • Paint gun is used to paint the fuselage. It

helps to paint easily a huge area. The color that will be painted on the body is mixed with other chemicals and is mixer is poured in the gun

 

Components

• Airbrushes are hand-held and used instead of a brush for detailed work such as photo retouching, painting nails or fine art

• Spray guns can be either automated or hand-held and have interchangeable heads to allow for different spray patterns

• Single color aerosol paints cans are portable and easy to store

Components

Sanding gun and Paper Sanding gun is used for easy and quick sanding

Sanding Gun

Components

Safety Breathing Mask• Used for easy breathing while painting.

Paints include chemicals that can be poisonous for human. So this musk is used for the safety of the workers

Components

Aircraft Painting processing

Painting process

After Spraying on the Components

Water Chemicals mixture of

interior painting

Painting process

After Dipping on the water + chemical mixture process

Painting process

SummaryTo keep the smooth the contribution of Maintenance Shops are very important as it includes a Varity of sectors

THANK YOU